Positive shuttle-ivlotion for looms



(No Model.)

Patented Mar. 5, 1889.

ATTORNEYS.

N. PETERS, Pnowuma n hm, Washmgicrh D4 c.

llnrrnn hrarns l nrnnr rrrcni \VILLIAM l1. llI'lUllCOCK, OF HOMER, NE XVYO BK.

'POSITIVE SHUTTLE-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 398,964, dated March 5,1889. Application filed December 21, 1887. Serial No. 258,567. (liemodel.)

To aZZ whom it may concern.-

Be it known that 1, \YILLIAM F, HITCHCOCK, of Homer, in the county ofCortland and State of New York, have invented anew and usefulImprovementin Positive Shuttle-Motions for Looms, of which the followingis a full. clear, and exact description.

My invention relates to that class of shuttle-motions for looms in whichthe shuttle is carried back and forth in a positive manner incontradistinction to being thrown, and in which the shuttle is adaptedto hold a circular disk-bobbin that carries the filling thread i 1through the remaining half of its path through or Wire, and is actuatedby hollow shuttlecarriers, which are operated intermittently in oppositedirectionsby any suitable positivelyacting mechanism, and are providedwith catches which operate automatically to en- -age either carrieralternately with and disengage it from the shuttle or shuttle-frame; andthe invention consists in certain details of construction andcombinations of parts connected with or comprising the shuttle, itscarriers, and engaging and disengaging catches,substantially as hereinafter deseri bed, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 represents a top view of the shuttle and its carriers orcarrier-arms with their attached engaging and releasing hooks orcatches, one of said carriers being shown in section, and the shuttlebeing also partly in section and broken away. Fig. 2 is a side View ofthe same.

A is the circular disk-bobbin, which carries the filling thread or wire,and which is supported by the vertical axial pin 1; in the shuttie orshuttle-frame B, that carries the bobbin to and fro through the warp,said shuttl being made hollow or of yoke shape in its middle forreception of the bobbin.

C O are the hollow shuttle-carriers, with which the shuttle is made toalternately engage, and from which it is caused to alternately becomedisengaged in order to draw the shuttle from side to side of the latheof the loom when the two shuttle-carriers meet at the middle of thelathe, the engaging and disengaging devices being hooks and catches,

as hereinbet'ore referred to, but of special construction andarrangement. The general op eration, however, is the same as that ofother positive sliuttle-motionsthat is to say, when the loom is set inoperation with the shuttle coupled to one ofi its carriers bothshuttlecarriers are simultaneous] y moved toward the middle of the lathethrough the warp wires or threads, and, meeting at the middle, theunoccupied shut-tle-carrier discngages the shuttle from the carrier towhich it coupled and becomes itself coupled to the shuttle, and onreversing its motion draws the shuttle the warp wires or threads. Theharness of the loom then shifting the warp wires or threads the shuttleis carried back, the advance part of its motion by the oneshuttlecarrier and the latter part of its motion and out at the otherside of the warp wires or threads by the other shuttle-carrier. Thisoperation is continuously repeated while the loom remains in operation,thclathe after the laying ofeach weft-strand moving up in the usualmanner and pressing such strand up to the edge of the woven portion ofthe fabric.

As my invention does not include any special means for operating thelathe or beater, which may be actuated in the usual way and by themechanism ordinarily employed in both positive motion and other looms,and as the shuttle-carriers maybe carried by the beater, so as to moveforward and backward with it, and so as to be capable of sliding indirection of their length to positively drive the shuttle as inpositive-motion looms generally, and may be actuated to drive theshuttle by the ordinary or any suitable means used in positive-motionlooms for the purpose, as, for instance, by the means described inLetters Patent No. 5209339, issued to Horace l-Voodman, October 29,1878, no description is necessary or will here be given of suchmechanisms or motions.

The shuttle B is provided on its side at the opposite ends of its yokewith notches c c, with or by which the shuttle is secured alternately toits carriers by means of the hooks D D, pivotally connected to thecarriers, as at d d, and so that said hooks when working move inhorizontal planes, whereby they work horizontally within the warp whichd oes away with all possibility of their catching or inter-- fering withthe warp. These hooks extend forward of the shuttle-carriers, and arearched to admit of the bobbin freely within them, and their outer ends,(2, are made inclined or wedge-shaped, so that each when coming incontact with the other will be alternately raised or released by it andthe other hook engaged with its respective shuttle-notch c or o. Ifdesired, the outer ends, e e, of said hooks may, as shown, be madebroad, so as to cover the entire width or edges of the bobbin, andthereby insure proper action when coming together. Practically-that is,so far as any possible interference of the shut-tle with the warp in itspassage therethrough is concerned-only the curved ends of these catchesor hooks D D protrude from the carriers C G, and said hooks being smoothand free from corners cannot possibly catch the warp, and a brokenthread will slide over them and in nowise prevent their proper action.By the arrangement of these hooks, as shown, they have no tendency tothrow the shuttle out of its line even when a little worn, and by reasonof their shape, arrangement beyond or outside of the peripheral portionof the bobbin, and horizontal motion, a much larger bobbin than isordinarilyadmissible may be used, the action of the catches notinterfering with the rotation of the bobbin.

The hooks D D are self-closing by means of independent springs, whichare necessary when weaving wire. Thus springs f are here shown,preferably, of an elongated construction and arranged within the rear orpivot ends of the hooksD D, made bifurcated for the purpose, saidsprings being applied to the backs of the hooks D D, to alternatelyclose them into engagement with their respective notches c c in theshuttle, as or after the other one of said hooks has been disengaged bythe meeting of the outer inclined ends, e, of the hooks, to transfer theshuttle from one carrier, C or O, to the other for continuance of themotion of the shuttle through the warp.

Each carrier 0 C is of tubular construction and may be fitted internallyback of its front end portion with a spring-cushion, E, which, as shown,consists of a simple spring and plunger forced outward by the spring.These spring-cushions serve to ease the blow, shock, or jar consequentupon the entry of the shuttle within the two carriers alternately, or as.the carriers receive and deliver or transfer the shuttle from onecarrier to the other, the opposite ends or noses of the shuttle bearingagainst the yielding cushions. Said cushions also serve to make eitherhook D D securely hold its own in the notch c or c of the shuttle it isin engagement with when the released carrier is away from the shuttle,the springs f applied to the hooks operating to keep the latter alwaysin their proper position for latching.

The automatic catching and releasing of the shuttle with and from thetwo carriers, as described, and whereby independent inclines to controlthe action of the hooks are dispensed with, form an important feature ofmy invention. These inclines may, however, if required, be used and areformed by gaining grooves s .9 into the side of the shuttle fromopposite ends thereof and terminating at their inner ends in inclines ss. The grooves s' s are parallel with the longitudinal axis of theshuttle, which allows the hooks to slide parallel along them and then upthe inclines s s at the proper moment, and so aid and steady the hooksas they lift one upon the other.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patentl. The combination, with ashuttlc, B, consistingof a yoke having vertically-aligned bobbin-bearings,diametrically-opposite projecting ends, and notches c c on one-side ofthe shuttle and where the said projecting ends join the yoke, of thetubular shuttlecarriers having arch-shaped hooks D D pivoted at. theirouter ends to the same side of the carriers, with their axes parallelwith the said bobbin-bearings and constructed to travel along theprojecting shuttle ends and engage the notches therein, and the springs9 throwing the hooks toward the open side of the yoke, substantially asset forth.

2. The combination of the shuttle B, having a central yoke, sidenotches, c c, at opposite ends of the yoke, and opposite end sidegrooves, s s, terminating in inclined inner ends, 3 s, the tubularshuttle-carriers C C, and the horizontally-operating arch-shaped hooks DD, pivoted to said carriers and constructed to travel within the groovess 8 up the inclines s s and to engage with the notches in the shuttle,also having inclined outer ends adapted to lift or release the one hookby the other, and springs operating .to

latch or close the hooks into engagement with the shuttle, essentiallyas set forth.

M. F. HITCHOOCK.

Vitnesses:

PEMBROKE PIERCE, J. B. UNDRIUS.

